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US20030234221A1 - Membrane filtration system - Google Patents

Membrane filtration system Download PDF

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Publication number
US20030234221A1
US20030234221A1 US10/406,807 US40680703A US2003234221A1 US 20030234221 A1 US20030234221 A1 US 20030234221A1 US 40680703 A US40680703 A US 40680703A US 2003234221 A1 US2003234221 A1 US 2003234221A1
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Prior art keywords
filtration system
membrane filtration
filler
filler member
membranes
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US10/406,807
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US6872305B2 (en
Inventor
Warren Johnson
Peter Rogers
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Siemens Water Technologies Holding Corp
Evoqua Water Technologies LLC
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US Filter Wastewater Group Inc
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Assigned to U.S. FILTER WASTEWATER GROUP, INC. reassignment U.S. FILTER WASTEWATER GROUP, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROGERS, PETER, JOHNSON, WARREN THOMAS
Publication of US20030234221A1 publication Critical patent/US20030234221A1/en
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Assigned to SIEMENS WATER TECHNOLOGIES CORP. reassignment SIEMENS WATER TECHNOLOGIES CORP. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: U.S. FILTER WASTEWATER GROUP, INC.
Assigned to SIEMENS WATER TECHNOLOGIES HOLDING CORP. reassignment SIEMENS WATER TECHNOLOGIES HOLDING CORP. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS WATER TECHNOLOGIES CORP.
Assigned to SIEMENS INDUSTRY, INC. reassignment SIEMENS INDUSTRY, INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS WATER TECHNOLOGIES HOLDING CORP.
Assigned to SIEMENS WATER TECHNOLOGIES LLC reassignment SIEMENS WATER TECHNOLOGIES LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS INDUSTRY, INC.
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN) Assignors: SIEMENS TREATED WATER OUTSOURCING CORP., SIEMENS WATER TECHNOLOGIES LLC, WTG HOLDINGS II CORP., WTG HOLDINGS III CORP.
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN) Assignors: SIEMENS TREATED WATER OUTSOURCING CORP., SIEMENS WATER TECHNOLOGIES LLC, WTG HOLDINGS II CORP., WTG HOLDINGS III CORP.
Assigned to EVOQUA WATER TECHNOLOGIES LLC reassignment EVOQUA WATER TECHNOLOGIES LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS WATER TECHNOLOGIES LLC
Assigned to SIEMENS WATER TECHNOLOGIES LLC reassignment SIEMENS WATER TECHNOLOGIES LLC RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0487) Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Assigned to SIEMENS WATER TECHNOLOGIES LLC reassignment SIEMENS WATER TECHNOLOGIES LLC RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0430) Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/0821—Membrane plate arrangements for submerged operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/20—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B01D63/046—Hollow fibre modules comprising multiple hollow fibre assemblies in separate housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B01D63/069—Tubular membrane modules comprising a bundle of tubular membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/04—Backflushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B01D2321/185—Aeration

Definitions

  • the present invention relates to membrane filtration systems, and more particularly to those systems employing porous or permeable membranes located in a tank or cell open to atmosphere.
  • TMP transmembrane pressure
  • waste liquid displaced from the tank needs to be disposed of or reprocessed, usually in an environmentally safe manner, so any reduction in the volume of such waste liquid is seen as advantageous in terms of environmental impact and cost.
  • the present invention seeks to overcome one or more of the abovementioned problems of the prior art, provide one or more of the advantages outlined above or at least provide a useful alternative by reducing the feed volume presented to the porous membranes in a simple, cost effective manner.
  • the present invention provides a method of reducing volume of feed liquid required in a membrane filtration system having a number of porous membranes submersed in a volume of feed liquid to be filtered, the method comprising the step of providing filler elements within said volume of feed liquid to be filtered.
  • the filler elements substantially fill voids between the porous membranes while still permitting liquid flow communication with the membranes.
  • the present invention provides a membrane filtration system having a number of porous membranes submersed in a volume of feed liquid to be filtered, wherein one or more filler members are provided in voids between said membranes to reduce said volume.
  • the membranes are porous hollow fibre membranes arranged in bundles to form membrane modules.
  • the modules are submersed in a liquid volume provided in a tank or cell open to atmospheric pressure.
  • the voids between the modules are at least partially filled by a filler member or members.
  • the filler members are each formed of a number of elements which fit together to form an integral unit. This enables the filler members to be assembled around the membranes modules without the need for removal of the modules. This assists in initial set-up as well as with replacement and maintenance regimes.
  • the filler elements may comprise spheres, preferably hollow, which can be packed around the membranes to fill the voids.
  • the spheres are preferably sized to avoid blocking or passing through any of the inlet/outlet ports or valves associated with the filtration system.
  • FIG. 1 shows a perspective view of a bank of filtration modules having filler members according to one embodiment of the invention
  • FIG. 2 shows an enlarged perspective view of the upper portion of the bank of filtration modules of FIG. 1;
  • FIG. 3 shows an exploded view of the filler members of FIG. 1 as they would be assembled around a filtration module
  • FIG. 4 shows an end elevation view of a central filler member of FIG. 3
  • FIG. 5 shows a side elevation view of the filler member of FIG. 4
  • FIG. 6 shows a perspective view of the filler member of FIG. 4
  • FIG. 7 shows a plan view of the filler member of FIG. 4
  • FIG. 8 shows an end elevation view of side filler member of FIG. 3
  • FIG. 9 shows a side elevation view of the filler member of FIG. 8.
  • FIG. 10 shows a perspective view of the filler member of FIG. 8.
  • FIG. 11 shows a plan view of the filler member of FIG. 8.
  • FIG. 12 shows a graph of transmembrane pressure over a period of time for two types of filtration system with a filler system being employed on one system part way through the test period.
  • the system includes a bank 5 of filter submodules 6 each attached in groups to a membrane filtration manifold 7 .
  • the submodules 6 comprise elongate bundles of porous hollow fibre membranes (not shown) typically enclosed by a supporting cage (not shown).
  • the submodules 6 are positioned within a feed tank or cell (not shown) and when the tank is filled the sub-modules are immersed in feed liquid.
  • Each manifold 7 is connected to a filtrate conduit 8 for removal of filtrate.
  • the fibre bundles of submodules 6 are cleaned externally by air bubbles or a mixture of air/liquid injected into each submodule to scrub the outer surfaces of the fibre membranes.
  • the submodules 6 may also be further cleaned by backwashing liquid and/or gas through the fibre pores.
  • each submodule 6 is encased partially by a number of filler members 9 which are segmented to allow each to fit closely around the elongate fibre bundles.
  • the filler members 9 are spaced from the upper and lower manifolds 7 to allow for flow of liquid and/or impurities in and out of the submodules 6 .
  • filler members 9 could be spaced radially from the outer periphery of each fibre bundle submodule 6 or various shapes of filler member 9 could be used which allowed for liquid flow to and from the submodule 6 while still substantially filling the voids between each submodule 6 .
  • the use of the filler members 9 provides an additional advantage of confining the gas bubbles within the submodules 6 and thus improving scouring efficiency.
  • the filler members 9 are formed from complementary segments comprising a central or core element 10 having two sets of parallel opposed semi-circular, in cross-section, channels 11 extending longitudinally along the length of the central element 10 .
  • the channels 11 have a diameter sized to accommodate and fit closely around the submodule 6 .
  • the sides 12 and inner edge 13 of the element 10 are provided with outwardly extending tabs or bosses 14 which mate with complementary slots 15 on other filler segments 16 to provide, in use, an integral filler member 9 .
  • the side filler segments 16 are generally T-shaped in cross-section with half-semi circular sides 17 of the same diameter as the central element 10 .
  • top and bottom surface 18 of the central element 10 are provided with a spacer peg 19 which positions the filler element 9 in a spatial relationship from the manifold 7 to allow fluid flow to and from the top and bottom of the fibre bundles.
  • the filler members 9 are desirably formed from material which is resistant to any destructive substances present in the feed stream as well as chemicals, gases, etc. which may be used in the backwash or other cleaning processes.
  • the filler members 9 are also desirably of neutral buoyancy so they will remain in position during submersion of the submodules in the feed tank. They can be formed from foamed plastics material such as polyethylene foam or blow or rotor moulded plastic. When blow-moulded, the filler elements may be hollow to allow for filling with a fluid (usually water) to produce the required neutral buoyancy.
  • FIG. 12 shows the effect on the transmembrane pressure characteristics of two filtration machines.
  • the upper graph shows a machine without the filler members whereas the lower graph shows a machine with filler members employed part way through the test cycle. This graph demonstrates the improved effectiveness of the backwash when filler members are employed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

A method and apparatus for reducing volume of feed liquid required in a porous membrane filtration system having a number of porous membranes (6) submersed in a volume of feed liquid to be filtered is provided, the method comprising the step of providing filler elements (9) within said volume of feed liquid to be filtered.

Description

    FIELD OF THE INVENTION
  • The present invention relates to membrane filtration systems, and more particularly to those systems employing porous or permeable membranes located in a tank or cell open to atmosphere. [0001]
    • BACKGROUND ART
  • Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field. [0002]
  • Porous membrane filtration systems require regular backwashing of the membranes to maintain filtration efficiency and flux while reducing transmembrane pressure (TMP) which rises as the membrane pores become clogged with impurities. Typically, during the backwash cycle the impurities are forced out of the membrane pores by pressurised gas, liquid or both into the feed tank or cell. The liquid containing impurities and deposits from the membranes is then drained or flushed from the tank. [0003]
  • The waste liquid displaced from the tank needs to be disposed of or reprocessed, usually in an environmentally safe manner, so any reduction in the volume of such waste liquid is seen as advantageous in terms of environmental impact and cost. [0004]
  • The draining or flushing of the tank, particularly when large arrays of membranes are used also requires time which results in down time of the filtration cycle. In order to reduce this down time large pumping systems are required to quickly drain and refill the tank. Where tanks or cells are arranged in banks and feed is used to refill the tank, a lowering in levels in other cells may be produced during the refill process. This again impinges on operating efficiency of the filtration system. [0005]
  • Further, in filtration systems employing gas bubble scouring of the membranes it has been found advantageous to confine the bubbles as much as possible in the region of the membranes to assist with the scouring process. [0006]
  • Reduction in backwash volume also reduces the volume of chemical cleaning agents required in some systems. This has the two-fold advantage of reducing cost in terms of chemical requirements while also reducing waste disposal problems. [0007]
  • It has been found advantageous to reduce the volume of feed liquid in the filtration cell to ameliorate the above problems and provide at least some of the advantages outlined above. [0008]
    • DISCLOSURE OF THE INVENTION
  • The present invention seeks to overcome one or more of the abovementioned problems of the prior art, provide one or more of the advantages outlined above or at least provide a useful alternative by reducing the feed volume presented to the porous membranes in a simple, cost effective manner. [0009]
  • According to one aspect, the present invention provides a method of reducing volume of feed liquid required in a membrane filtration system having a number of porous membranes submersed in a volume of feed liquid to be filtered, the method comprising the step of providing filler elements within said volume of feed liquid to be filtered. [0010]
  • Preferably, the filler elements substantially fill voids between the porous membranes while still permitting liquid flow communication with the membranes. [0011]
  • According to another aspect, the present invention provides a membrane filtration system having a number of porous membranes submersed in a volume of feed liquid to be filtered, wherein one or more filler members are provided in voids between said membranes to reduce said volume. [0012]
  • In one preferred form the membranes are porous hollow fibre membranes arranged in bundles to form membrane modules. The modules are submersed in a liquid volume provided in a tank or cell open to atmospheric pressure. In this form of the invention, the voids between the modules are at least partially filled by a filler member or members. [0013]
  • Preferably, the filler members are each formed of a number of elements which fit together to form an integral unit. This enables the filler members to be assembled around the membranes modules without the need for removal of the modules. This assists in initial set-up as well as with replacement and maintenance regimes. [0014]
  • The filler elements may comprise spheres, preferably hollow, which can be packed around the membranes to fill the voids. The spheres are preferably sized to avoid blocking or passing through any of the inlet/outlet ports or valves associated with the filtration system.[0015]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: [0016]
  • FIG. 1 shows a perspective view of a bank of filtration modules having filler members according to one embodiment of the invention; [0017]
  • FIG. 2 shows an enlarged perspective view of the upper portion of the bank of filtration modules of FIG. 1; [0018]
  • FIG. 3 shows an exploded view of the filler members of FIG. 1 as they would be assembled around a filtration module; [0019]
  • FIG. 4 shows an end elevation view of a central filler member of FIG. 3; [0020]
  • FIG. 5 shows a side elevation view of the filler member of FIG. 4; [0021]
  • FIG. 6 shows a perspective view of the filler member of FIG. 4; [0022]
  • FIG. 7 shows a plan view of the filler member of FIG. 4; [0023]
  • FIG. 8 shows an end elevation view of side filler member of FIG. 3; [0024]
  • FIG. 9 shows a side elevation view of the filler member of FIG. 8; [0025]
  • FIG. 10 shows a perspective view of the filler member of FIG. 8; [0026]
  • FIG. 11 shows a plan view of the filler member of FIG. 8; and [0027]
  • FIG. 12 shows a graph of transmembrane pressure over a period of time for two types of filtration system with a filler system being employed on one system part way through the test period.[0028]
    • DESCRIPTION OF PREFERRED EMBODIMENTS
  • Referring to the drawings, the embodiments will be described in relation to a manifold and filtration system disclosed in our co-pending PCT Application No. [0029] WO 00/62908 (which is incorporated herein by cross-reference), however, it will be appreciated that the invention is equally applicable to other forms of filtration system requiring similar advantages.
  • The system includes a [0030] bank 5 of filter submodules 6 each attached in groups to a membrane filtration manifold 7. In this embodiment, the submodules 6 comprise elongate bundles of porous hollow fibre membranes (not shown) typically enclosed by a supporting cage (not shown). The submodules 6 are positioned within a feed tank or cell (not shown) and when the tank is filled the sub-modules are immersed in feed liquid. Each manifold 7 is connected to a filtrate conduit 8 for removal of filtrate.
  • During the backwash process, the fibre bundles of [0031] submodules 6 are cleaned externally by air bubbles or a mixture of air/liquid injected into each submodule to scrub the outer surfaces of the fibre membranes. The submodules 6 may also be further cleaned by backwashing liquid and/or gas through the fibre pores.
  • In accordance with this embodiment, in order to reduce backwash volume, each [0032] submodule 6 is encased partially by a number of filler members 9 which are segmented to allow each to fit closely around the elongate fibre bundles. In this embodiment, the filler members 9 are spaced from the upper and lower manifolds 7 to allow for flow of liquid and/or impurities in and out of the submodules 6. It will be appreciated that other arrangements to allow liquid flow can also be employed, for example, the filler members 9 could be spaced radially from the outer periphery of each fibre bundle submodule 6 or various shapes of filler member 9 could be used which allowed for liquid flow to and from the submodule 6 while still substantially filling the voids between each submodule 6.
  • In this system, which employs a gas bubble scouring method, the use of the [0033] filler members 9 provides an additional advantage of confining the gas bubbles within the submodules 6 and thus improving scouring efficiency.
  • As best shown in FIGS. [0034] 3 to 11, the filler members 9 are formed from complementary segments comprising a central or core element 10 having two sets of parallel opposed semi-circular, in cross-section, channels 11 extending longitudinally along the length of the central element 10. The channels 11 have a diameter sized to accommodate and fit closely around the submodule 6. The sides 12 and inner edge 13 of the element 10 are provided with outwardly extending tabs or bosses 14 which mate with complementary slots 15 on other filler segments 16 to provide, in use, an integral filler member 9.
  • The [0035] side filler segments 16 are generally T-shaped in cross-section with half-semi circular sides 17 of the same diameter as the central element 10.
  • The top and [0036] bottom surface 18 of the central element 10 are provided with a spacer peg 19 which positions the filler element 9 in a spatial relationship from the manifold 7 to allow fluid flow to and from the top and bottom of the fibre bundles.
  • The [0037] filler members 9 are desirably formed from material which is resistant to any destructive substances present in the feed stream as well as chemicals, gases, etc. which may be used in the backwash or other cleaning processes. The filler members 9 are also desirably of neutral buoyancy so they will remain in position during submersion of the submodules in the feed tank. They can be formed from foamed plastics material such as polyethylene foam or blow or rotor moulded plastic. When blow-moulded, the filler elements may be hollow to allow for filling with a fluid (usually water) to produce the required neutral buoyancy.
  • FIG. 12 shows the effect on the transmembrane pressure characteristics of two filtration machines. The upper graph shows a machine without the filler members whereas the lower graph shows a machine with filler members employed part way through the test cycle. This graph demonstrates the improved effectiveness of the backwash when filler members are employed. [0038]
  • It will be appreciated that further embodiments and exemplifications of the invention are possible without departing from the spirit or scope of the invention described. [0039]

Claims (19)

What is claimed is:
1. A method of reducing a volume of feed liquid in a porous membrane filtration system comprising a plurality of porous membranes submersed in a volume of feed liquid to be filtered, the method comprising the step of providing a plurality of filler elements within said volume of feed liquid to be filtered.
2. A method according to claim 1 wherein the filler elements substantially fill voids between the porous membranes while still permitting liquid flow communication with the membranes.
3. A membrane filtration system comprising a plurality of porous membranes submersed in a volume of a feed liquid to be filtered and comprising at least one filler member in a void between said membranes to reduce said volume.
4. A membrane filtration system according to claim 3 wherein the membranes comprise porous hollow fibre membranes arranged in bundles, the bundles comprising membrane modules.
5. A membrane filtration system according to claim 4 wherein the modules are submersed in a liquid volume in a tank or a cell open to an atmospheric pressure.
6. A membrane filtration system according to claim 4 wherein the void between the modules is at least partially filled by the filler member.
7. A membrane filtration system according to claim 3 wherein the filler member comprises a number of elements which fit together to form an integral unit.
8. A membrane filtration system according to claim 3 wherein said filler member is neutrally buoyant with respect to said feed liquid.
9. A membrane filtration system according to claim 3 wherein said filler member is spherical in shape.
10. A membrane filtration system according to claim 8 wherein said filler member is hollow and is configured to be filled with a fluid to provide said neutral buoyancy.
11. A membrane filtration system according to claim 4 wherein the filler member comprises a plurality of complementary segments comprising a central element comprising two sets of parallel opposed semi-circular, in cross-section, channels extending longitudinally along a length of the central element, each channel have a diameter sized to accommodate and fit closely around a fibre bundle, and a plurality of side filler segments of generally T-shaped cross-section with half-semi circular sides of a same diameter as said channels configured to engage with said central element to form said filler member.
12. A membrane filtration system according to claim 11 wherein each filler member comprises complementary engagement formations for engaging with associated engagement means on other filler members.
13. A membrane filtration system according to claim 3 wherein the filler member comprises a foamed plastic material.
14. A membrane filtration system according to claim 3 wherein the filler member comprises a blow-moulded plastic material.
15. A membrane filtration system according to claim 3 wherein the filler member comprises a rotor-moulded plastic material.
16. A membrane filtration system according to claim 5 wherein the void between the modules is at least partially filled by the filler member.
17. A membrane filtration system according to claim 3 comprising a plurality of filler members.
18. A membrane filtration system according to claim 3 comprising a plurality of voids.
19. A membrane filtration system according to claim 9 wherein said filler member is hollow and is configured to be filled with a fluid to provide said neutral buoyancy.
US10/406,807 2000-10-09 2003-04-02 Membrane filtration system Expired - Lifetime US6872305B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPR0648 2000-10-09
AUPR0648A AUPR064800A0 (en) 2000-10-09 2000-10-09 Improved membrane filtration system
PCT/AU2001/001248 WO2002030550A1 (en) 2000-10-09 2001-10-03 Improved membrane filtration system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2001/001248 Continuation WO2002030550A1 (en) 2000-10-09 2001-10-03 Improved membrane filtration system

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US20030234221A1 true US20030234221A1 (en) 2003-12-25
US6872305B2 US6872305B2 (en) 2005-03-29

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EP (2) EP1328335B1 (en)
JP (2) JP3917937B2 (en)
CN (1) CN1224450C (en)
AT (2) ATE489159T1 (en)
AU (3) AUPR064800A0 (en)
CA (2) CA2424590C (en)
DE (2) DE60116356T2 (en)
MY (1) MY129690A (en)
NZ (1) NZ525149A (en)
WO (1) WO2002030550A1 (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6955762B2 (en) 2001-11-16 2005-10-18 U. S. Filter Wastewater Group, Inc. Method of cleaning membranes
US6962258B2 (en) 2000-04-10 2005-11-08 U.S. Filter Wastewater Group, Inc. Hollow fiber restraining system
US7018533B2 (en) 2001-09-18 2006-03-28 U.S. Filter Wastewater Group, Inc. High solids module
US7226541B2 (en) 2001-06-20 2007-06-05 Siemens Water Technology Corp. Membrane polymer compositions
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
US7264716B2 (en) 1999-04-20 2007-09-04 Siemens Water Technologies Corp. Membrane filtration manifold system
US7300022B2 (en) 2000-11-13 2007-11-27 Siemens Water Technologies Corp. Modified membranes
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
US20110127209A1 (en) * 2008-07-24 2011-06-02 Siemens Water Technologies Corp. Frame System for Membrane Filtration Modules
US8048306B2 (en) 1996-12-20 2011-11-01 Siemens Industry, Inc. Scouring method
US8182687B2 (en) 2002-06-18 2012-05-22 Siemens Industry, Inc. Methods of minimising the effect of integrity loss in hollow fibre membrane modules
US8268176B2 (en) 2003-08-29 2012-09-18 Siemens Industry, Inc. Backwash
US8287743B2 (en) 2007-05-29 2012-10-16 Siemens Industry, Inc. Membrane cleaning with pulsed airlift pump
US8293098B2 (en) 2006-10-24 2012-10-23 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US8318028B2 (en) 2007-04-02 2012-11-27 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US8377305B2 (en) 2004-09-15 2013-02-19 Siemens Industry, Inc. Continuously variable aeration
US20130056404A1 (en) * 2010-04-14 2013-03-07 Degremont Water desalination plant, in particular seawater desalination plant, and connector for a tube of such a plant
WO2013102167A1 (en) * 2011-12-29 2013-07-04 Delcath Systems, Inc. Filter and frame apparatus and method of use
US8496828B2 (en) 2004-12-24 2013-07-30 Siemens Industry, Inc. Cleaning in membrane filtration systems
US8506806B2 (en) 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
US8512568B2 (en) 2001-08-09 2013-08-20 Siemens Industry, Inc. Method of cleaning membrane modules
US8518256B2 (en) 2001-04-04 2013-08-27 Siemens Industry, Inc. Membrane module
US8652331B2 (en) 2008-08-20 2014-02-18 Siemens Water Technologies Llc Membrane system backwash energy efficiency
US8758621B2 (en) 2004-03-26 2014-06-24 Evoqua Water Technologies Llc Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
US8758622B2 (en) 2004-12-24 2014-06-24 Evoqua Water Technologies Llc Simple gas scouring method and apparatus
US8790515B2 (en) * 2004-09-07 2014-07-29 Evoqua Water Technologies Llc Reduction of backwash liquid waste
US8808540B2 (en) 2003-11-14 2014-08-19 Evoqua Water Technologies Llc Module cleaning method
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4282598B2 (en) 2002-10-10 2009-06-24 シーメンス・ウォーター・テクノロジーズ・コーポレーション Filtration device and method for cleaning the filtration device
AU2002953111A0 (en) 2002-12-05 2002-12-19 U. S. Filter Wastewater Group, Inc. Mixing chamber
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
KR100534526B1 (en) * 2004-04-07 2005-12-07 주식회사 코오롱 Submerged hollow fiber membrane module
AU2005240524C1 (en) 2004-04-22 2009-12-24 Evoqua Water Technologies Llc Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
JP2008504122A (en) * 2004-07-02 2008-02-14 シーメンス・ウォーター・テクノロジーズ・コーポレーション Gas transport membrane
JP2008505197A (en) 2004-07-05 2008-02-21 シーメンス・ウォーター・テクノロジーズ・コーポレーション Hydrophilic membrane
NZ588094A (en) 2004-08-20 2012-04-27 Siemens Water Tech Corp Potting head for hollow fibre filter module
US7297278B2 (en) * 2004-10-20 2007-11-20 Baker Hughes Incorporated Methods for removing metals from water
CN101084057B (en) * 2004-12-03 2013-10-23 西门子工业公司 Membrane post treatment
WO2006074519A1 (en) * 2005-01-14 2006-07-20 Siemens Water Technologies Corp. Filtration system
US20080214687A1 (en) * 2005-06-20 2008-09-04 Heinz-Joachim Muller Cross Linking Treatment of Polymer Membranes
JP2009500169A (en) 2005-07-14 2009-01-08 シーメンス・ウォーター・テクノロジーズ・コーポレーション Monopersulfate treatment of membranes
AU2006284524B2 (en) * 2005-08-22 2011-04-21 Evoqua Water Technologies Llc An assembly for water filtration using a tube manifold to minimise backwash
WO2007044415A2 (en) 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Method and apparatus for treating wastewater
US7563363B2 (en) 2005-10-05 2009-07-21 Siemens Water Technologies Corp. System for treating wastewater
US7455765B2 (en) 2006-01-25 2008-11-25 Siemens Water Technologies Corp. Wastewater treatment system and method
US7811460B2 (en) * 2006-03-07 2010-10-12 U.S. Environmental Protection Agency Process and apparatus for removal of biocolloids from water
US20080110504A1 (en) * 2006-11-13 2008-05-15 Warren Johnson Manifold system for filtration modules
GB0808464D0 (en) * 2008-05-09 2008-06-18 H2Oil & Gas Ltd Filtration system
CN104394965B (en) 2012-06-28 2016-11-23 伊沃夸水处理技术有限责任公司 encapsulating method
DE112013004713T5 (en) 2012-09-26 2015-07-23 Evoqua Water Technologies Llc Membrane safety device
AU2013323934A1 (en) 2012-09-27 2015-02-26 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
US10130915B2 (en) 2013-09-26 2018-11-20 Alto Solution Sa Self supporting structure for membrane crossflow cartridges
HUE061765T2 (en) 2013-10-02 2023-08-28 Rohm & Haas Electronic Mat Singapore Pte Ltd Device for repairing a membrane filtration module
CN106062303B (en) * 2014-03-07 2019-05-14 德国德力能有限公司 Apparatus and method for positioning a detonator within a perforating gun assembly
US9683686B2 (en) * 2014-12-15 2017-06-20 American Air Filter Company, Inc. Auto-draining filter apparatus
WO2017011068A1 (en) 2015-07-14 2017-01-19 Evoqua Water Technologies Llc Aeration device for filtration system
FR3049196B1 (en) * 2016-03-23 2018-03-30 Veolia Water Solutions & Technologies Support DEVICE FOR MEMBRANE FILTRATION OF LIQUID UNDER PRESSURE.
CN110431114A (en) 2017-04-06 2019-11-08 懿华水处理技术有限责任公司 Wastewater Treatment Systems and Methods
EP3406325A1 (en) * 2017-05-22 2018-11-28 Siemens Aktiengesellschaft Filter assembly with filler core
KR20210132921A (en) * 2020-04-28 2021-11-05 주식회사 아모그린텍 filter module for water-purifying device using gravity and water-purifying device including the same

Citations (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228876A (en) * 1960-09-19 1966-01-11 Dow Chemical Co Permeability separatory apparatus, permeability separatory membrane element, method of making the same and process utilizing the same
US3693406A (en) * 1970-01-26 1972-09-26 Air Intake Renu Method for inspecting filters
US3968192A (en) * 1974-04-19 1976-07-06 The Dow Chemical Company Method of repairing leaky hollow fiber permeability separatory devices
US4188817A (en) * 1978-10-04 1980-02-19 Standard Oil Company (Indiana) Method for detecting membrane leakage
US4192750A (en) * 1976-08-09 1980-03-11 Massey-Ferguson Inc. Stackable filter head unit
US4193780A (en) * 1978-03-20 1980-03-18 Industrial Air, Inc. Air filter construction
US4218324A (en) * 1979-05-03 1980-08-19 Textron, Inc. Filter element having removable filter media member
US4248648A (en) * 1979-07-18 1981-02-03 Baxter Travenol Laboratories, Inc. Method of repairing leaks in a hollow capillary fiber diffusion device
US4385150A (en) * 1980-10-17 1983-05-24 Asahi Glass Company, Ltd. Organic solution of fluorinated copolymer having carboxylic acid groups
US4384474A (en) * 1980-10-30 1983-05-24 Amf Incorporated Method and apparatus for testing and using membrane filters in an on site of use housing
US4451369A (en) * 1980-12-18 1984-05-29 Toyo Boseki Kabushiki Kaisha Fluid separation apparatus
US4511471A (en) * 1982-06-03 1985-04-16 Drm, Dr. Muller Ag Filter apparatus for continuously thickening suspensions
US4540490A (en) * 1982-04-23 1985-09-10 Jgc Corporation Apparatus for filtration of a suspension
US4609465A (en) * 1984-05-21 1986-09-02 Pall Corporation Filter cartridge with a connector seal
US4614109A (en) * 1982-12-27 1986-09-30 Brunswick Corporation Method and device for testing the permeability of membrane filters
US4636296A (en) * 1983-08-18 1987-01-13 Gerhard Kunz Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions
US4642182A (en) * 1985-03-07 1987-02-10 Mordeki Drori Multiple-disc type filter with extensible support
US4647377A (en) * 1984-07-24 1987-03-03 Kabushiki Kaisha Ito Tekkousho Filter apparatus
US4650596A (en) * 1983-05-13 1987-03-17 Henkel Kommanditgesellschaft Auf Aktien Pour point depressants for paraffin solutions
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
US4660411A (en) * 1985-05-31 1987-04-28 Reid Philip L Apparatus for measuring transmission of volatile substances through films
US4670145A (en) * 1986-07-08 1987-06-02 E. I. Du Pont De Nemours And Company Multiple bundle fluid separation apparatus
US4673507A (en) * 1985-05-06 1987-06-16 Eco-Tec Limited Fluid treatment process and apparatus
US4687561A (en) * 1982-05-13 1987-08-18 Gerhard Kunz Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions
US4688511A (en) * 1984-08-01 1987-08-25 Filterwerk Mann & Hummel Gmbh Dirt accumulation indicator for air intake filters
US4718270A (en) * 1983-05-17 1988-01-12 Coulter Electronics, Ltd. Porosimeter and methods of assessing porosity
US4744240A (en) * 1986-05-27 1988-05-17 Akzo Nv Method for determining the bubble point or the largest pore of membranes or of filter materials
US4756875A (en) * 1983-09-29 1988-07-12 Kabushiki Kaisha Toshiba Apparatus for filtering water containing radioactive substances in nuclear power plants
US4767539A (en) * 1983-09-30 1988-08-30 Memtec Limited Cleaning of hollow fiber filters utilized in lumenal gas flow
US4797211A (en) * 1985-12-24 1989-01-10 Kernforschungszentrum Karlsruhe Gmbh Cross flow microfilter
US4810384A (en) * 1986-06-20 1989-03-07 Rhone-Poulenc Recherches Hydrophilic PVDF semipermeable membrane
US4812235A (en) * 1982-03-29 1989-03-14 Hr Textron, Inc. Filter element assembly replaceable mesh pack
US4816160A (en) * 1985-03-28 1989-03-28 Memtec Limited Cooling hollow fibre cross-flow separators
US4840227A (en) * 1986-10-28 1989-06-20 Draegerwerk Ag Process for producing a hollow fiber mass transfer module and module produced by this process
US4846970A (en) * 1987-06-22 1989-07-11 Osmonics, Inc. Cross-flow filtration membrane test unit
US4921610A (en) * 1986-09-04 1990-05-01 Memtec Limited Cleaning of hollow fibre filters
US4931186A (en) * 1985-03-05 1990-06-05 Memtec Limited Concentration of solids in a suspension
US4935143A (en) * 1986-07-11 1990-06-19 Memtec Limited Cleaning of filters
US4952317A (en) * 1989-03-10 1990-08-28 Bradley Culkin Device and method for filtering a colloidal suspension
US4999038A (en) * 1989-02-07 1991-03-12 Lundberg Bo E H Filter unit
US5006402A (en) * 1989-04-28 1991-04-09 The University Of Akron Wholly aromatic polyester fiber-reinforced high performance thermoplastic and process for preparing same
US5005430A (en) * 1989-05-16 1991-04-09 Electric Power Research Institute, Inc. Automated membrane filter sampler
US5024762A (en) * 1985-03-05 1991-06-18 Memtec Limited Concentration of solids in a suspension
US5079272A (en) * 1989-11-30 1992-01-07 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
US5094750A (en) * 1986-09-12 1992-03-10 Memtec Limited Hollow fibre filter cartridge and header
US5104546A (en) * 1990-07-03 1992-04-14 Aluminum Company Of America Pyrogens separations by ceramic ultrafiltration
USH1045H (en) * 1990-11-19 1992-05-05 The United States Of America As Represented By The Secretary Of The Army Air bubble leak detection test device
US5137631A (en) * 1991-10-22 1992-08-11 E. I. Du Pont De Nemours And Company Multiple bundle permeator
US5138870A (en) * 1989-07-10 1992-08-18 Lyssy Georges H Apparatus for measuring water vapor permeability through sheet materials
US5151191A (en) * 1990-09-26 1992-09-29 Japan Organo Co., Ltd. Filtration process using hollow fiber membrane module
US5151193A (en) * 1989-02-15 1992-09-29 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung Ev Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use
US5192456A (en) * 1991-03-07 1993-03-09 Kubota Corporation Apparatus for treating activated sludge and method of cleaning it
US5194149A (en) * 1989-09-29 1993-03-16 Memtec Limited Filter cartridge manifold
US5198116A (en) * 1992-02-10 1993-03-30 D.W. Walker & Associates Method and apparatus for measuring the fouling potential of membrane system feeds
US5209852A (en) * 1990-08-31 1993-05-11 Japan Organo Co. Ltd. Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module
US5211823A (en) * 1991-06-19 1993-05-18 Millipore Corporation Process for purifying resins utilizing bipolar interface
US5221478A (en) * 1988-02-05 1993-06-22 The Dow Chemical Company Chromatographic separation using ion-exchange resins
US5227063A (en) * 1989-10-03 1993-07-13 Zenon Environmental Inc. Tubular membrane module
US5297420A (en) * 1993-05-19 1994-03-29 Mobil Oil Corporation Apparatus and method for measuring relative permeability and capillary pressure of porous rock
US5320760A (en) * 1992-12-07 1994-06-14 E. I. Du Pont De Nemours And Company Method of determining filter pluggage by measuring pressures
US5389260A (en) * 1993-04-02 1995-02-14 Clack Corporation Brine seal for tubular filter
US5401401A (en) * 1993-01-13 1995-03-28 Aquaria Inc. Hang on tank canister filter
US5403479A (en) * 1993-12-20 1995-04-04 Zenon Environmental Inc. In situ cleaning system for fouled membranes
US5405528A (en) * 1990-04-20 1995-04-11 Memtec Limited Modular microporous filter assemblies
US5417101A (en) * 1991-06-10 1995-05-23 Pall Corporation Method and apparatus for testing the integrity of filter elements
US5419816A (en) * 1993-10-27 1995-05-30 Halox Technologies Corporation Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions
US5480553A (en) * 1992-02-12 1996-01-02 Mitsubishi Rayon Co., Ltd. Hollow fiber membrane module
US5531900A (en) * 1994-07-07 1996-07-02 University Of Arizona Modification of polyvinylidene fluoride membrane and method of filtering
US5531848A (en) * 1992-05-18 1996-07-02 Minntech Corporation Method of manufacturing of hollow fiber cartridge with porous ring
US5607593A (en) * 1993-11-30 1997-03-04 Otv Omnium De Trajtements Et De Valorisation S.A. Installation for making water potable with submerged filtering membranes
US5639373A (en) * 1995-08-11 1997-06-17 Zenon Environmental Inc. Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
US5643455A (en) * 1991-08-07 1997-07-01 Memtel Limited Concentration of solids in a suspension using hollow fibre membranes
USD396046S (en) * 1996-10-24 1998-07-14 Allen Scheel Steer device for an outboard motor
USD396726S (en) * 1997-02-06 1998-08-04 Abc Group Combined air intake manifold and filter
US5910250A (en) * 1995-08-11 1999-06-08 Zenon Environmental Inc. Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers
US5914039A (en) * 1997-07-01 1999-06-22 Zenon Environmental Inc. Filtration membrane with calcined α-alumina particles therein
US5918264A (en) * 1992-11-02 1999-06-29 Usf Filtration And Separations Group Inc. Fiber monitoring system
US5942113A (en) * 1996-10-16 1999-08-24 Morimura; Tadaki Solid-liquid separating filter medium for sewage, waste water, etc
US5944997A (en) * 1995-08-11 1999-08-31 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
US6039872A (en) * 1997-10-27 2000-03-21 Pall Corporation Hydrophilic membrane
US6048454A (en) * 1997-03-18 2000-04-11 Jenkins; Dan Oil filter pack and assembly
US6077435A (en) * 1996-03-15 2000-06-20 Usf Filtration And Separations Group Inc. Filtration monitoring and control system
US6083393A (en) * 1997-10-27 2000-07-04 Pall Corporation Hydrophilic membrane
US6193890B1 (en) * 1995-08-11 2001-02-27 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
US6202475B1 (en) * 1997-05-30 2001-03-20 Usf Filtration And Separations Group, Inc. Predicting logarithmic reduction values
US6254773B1 (en) * 1996-12-10 2001-07-03 Usf Filtration And Separations Group, Inc. Microporous membrane filtration assembly
US6280626B1 (en) * 1998-08-12 2001-08-28 Mitsubishi Rayon Co., Ltd. Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly
US6354444B1 (en) * 1997-07-01 2002-03-12 Zenon Environmental Inc. Hollow fiber membrane and braided tubular support therefor
US6440303B2 (en) * 2000-03-02 2002-08-27 Chapin Manufacturing, Inc. Fluid filter
US6524481B2 (en) * 1998-09-25 2003-02-25 U.S. Filter Wastewater Group, Inc. Apparatus and method for cleaning membrane filtration modules
US20030075504A1 (en) * 1998-09-25 2003-04-24 Fufang Zha Apparatus and method for cleaning membrane filtration modules
US6555005B1 (en) * 1996-12-20 2003-04-29 Usf Filtration & Separations Group Inc. Scouring method
US20030089659A1 (en) * 2000-04-10 2003-05-15 Fufang Zha Hollow fibre restraining system

Family Cites Families (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2236537B1 (en) * 1973-07-11 1977-12-23 Rhone Poulenc Ind
US3992301A (en) 1973-11-19 1976-11-16 Raypak, Inc. Automatic flushing system for membrane separation machines such as reverse osmosis machines
JPS5371686A (en) * 1976-12-09 1978-06-26 Efu Konerii Robaato Tubular molecule filtering apparatus
NL7905957A (en) * 1979-08-02 1980-09-30 Wafilin Bv DEVICE FOR MEMBRANE FILTRATION WITH OUTSIDE DRAIN.
JPS624408Y2 (en) 1981-04-20 1987-01-31
JPS57174927A (en) 1981-04-21 1982-10-27 Fujitsu Ltd Skew adjusting circuit
JPS5888007A (en) 1981-11-20 1983-05-26 Asahi Glass Co Ltd How to separate liquid mixtures
CA1221645A (en) 1983-02-28 1987-05-12 Yoshihiro Okano Filtration apparatus using hollow fiber-membrane
US4650586A (en) 1983-09-26 1987-03-17 Kinetico, Inc. Fluid treatment system
JPS60206283A (en) 1984-03-30 1985-10-17 Pioneer Electronic Corp Video format data synchronizing circuit
EP0170895B1 (en) 1984-07-09 1989-03-22 Millipore Corporation Improved electrodeionization apparatus and method
JPS6197006U (en) 1984-11-30 1986-06-21
JPS61107905U (en) 1984-12-19 1986-07-09
US4793932A (en) 1985-04-10 1988-12-27 Memtec Limited Variable volume filter or concentrator
JPS61257203A (en) 1985-05-10 1986-11-14 Terumo Corp Hydrophilic porous membrane and its preparation
JPS61263605A (en) 1985-05-17 1986-11-21 Toshiba Corp Hollow yarn membrane device
US4876006A (en) 1985-10-08 1989-10-24 Ebara Corporation Hollow fiber filter device
JPH0319928Y2 (en) 1986-01-06 1991-04-26
US4779448A (en) 1986-01-28 1988-10-25 Donaldson Company, Inc. Photoelectric bubble detector apparatus and method
JPS62140607U (en) 1986-02-27 1987-09-04
JPH0742861B2 (en) 1986-03-10 1995-05-15 ヤマハ発動機株式会社 Internal combustion engine intake system
JPS62179540U (en) 1986-05-01 1987-11-14
JPH07770Y2 (en) 1986-07-07 1995-01-11 スズキ株式会社 Vehicle speed change control device
US4876012A (en) 1986-09-12 1989-10-24 Memtec Limited Hollow fibre filter cartridge and header
JPH0328797Y2 (en) 1986-11-06 1991-06-20
JPS6397634U (en) 1986-12-16 1988-06-24
JPH0671120B2 (en) 1987-04-21 1994-09-07 日本電気株式会社 Optical integrated device
US4784771A (en) 1987-08-03 1988-11-15 Environmental Water Technology, Inc. Method and apparatus for purifying fluids
JP2527462B2 (en) 1988-06-03 1996-08-21 ダイセル化学工業株式会社 Hollow fiber ultrafiltration membrane module automatic leak detection and alarm system
GB8816216D0 (en) 1988-07-07 1988-08-10 Fairey Arlon Ltd Filters
JPH0671540B2 (en) 1988-12-20 1994-09-14 株式会社東芝 Cleaning method of hollow fiber membrane filter
JP2773231B2 (en) 1989-04-25 1998-07-09 東洋紡績株式会社 Leak test method for hydrophobic hollow fiber type porous membrane
NL8901090A (en) 1989-04-28 1990-11-16 X Flow Bv METHOD FOR MANUFACTURING A MICROPOROUS MEMBRANE AND SUCH MEMBRANE
DE3923128A1 (en) 1989-07-13 1991-01-24 Akzo Gmbh FLAX OR CAPILLARY MEMBRANE BASED ON A HOMOGENEOUS MIXTURE OF POLYVINYLIDE FLUORIDE AND OF A SECOND, BY CHEMICAL IMPROVEMENT, HYDROPHILIBLABLE POLYMERS
US5158721A (en) 1989-11-30 1992-10-27 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
SE465355B (en) * 1989-12-07 1991-09-02 Provivo Ab DISPOSABLE AND PROCEDURE FOR FILTERING OF A PARTICULATED WATER VOLUME
US5034126A (en) * 1990-01-29 1991-07-23 The Dow Chemical Company Counter current dual-flow spiral wound dual-pipe membrane separation
US5066375A (en) 1990-03-19 1991-11-19 Ionics, Incorporated Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack
JPH0810585Y2 (en) 1990-05-22 1996-03-29 大成建設株式会社 Lifting machine
US5364527A (en) 1990-06-20 1994-11-15 Heinz Zimmermann Apparatus and process for treating water
DE4117281C2 (en) 1990-06-29 1996-02-22 Gore Enterprise Holdings Inc Hydrophilized, microporous membrane made of polytetrafluoroethylene and process for its production
US5248424A (en) 1990-08-17 1993-09-28 Zenon Environmental Inc. Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
FR2666245B1 (en) 1990-08-31 1992-10-23 Lyonnaise Eaux METHOD FOR CONTROLLING THE OPERATING MODES OF AN AUTOMATIC WATER FILTRATION APPARATUS ON TUBULAR MEMBRANES.
US5069065A (en) 1991-01-16 1991-12-03 Mobil Oil Corporation Method for measuring wettability of porous rock
GB2253572B (en) 1991-02-11 1994-12-14 Aljac Engineering Limited Flow device in fluid circuits
FR2674448B1 (en) 1991-03-26 1994-03-25 Dumez Lyonnaise Eaux METHOD FOR CLEANING MESOPOROUS TUBULAR MEMBRANES OF ULTRAFILTRATION.
JP3093811B2 (en) 1991-04-08 2000-10-03 旭化成工業株式会社 Polyvinylidene fluoride resin film and method for producing the same
DE4117422C1 (en) 1991-05-28 1992-11-12 Willi Prof. Dr.-Ing. 7432 Bad Urach De Dettinger Monitoring contamination level of filter, partic. for hydraulic fluids - in which signal is produced which correlates with quotient of two pressure differences and evaluating device produces signal to change filter when quotient reaches given value
JP3111101B2 (en) 1991-12-03 2000-11-20 旭化成工業株式会社 Leak inspection method for membrane separation equipment
TW207964B (en) * 1991-12-16 1993-06-21 Permea Inc
DE69313574T2 (en) 1992-05-01 1998-01-08 Filtec Corp Device for checking the integrity of membrane filters
JP3250274B2 (en) 1992-10-08 2002-01-28 東レ株式会社 Filter
US5361625A (en) 1993-04-29 1994-11-08 Ylvisaker Jon A Method and device for the measurement of barrier properties of films against gases
FR2705734B1 (en) 1993-05-25 1995-06-30 Snecma Method and device for improving the safety of fluid filters.
JP3486451B2 (en) 1994-04-12 2004-01-13 三菱レイヨン株式会社 Hollow fiber membrane module
JPH07313851A (en) * 1994-05-24 1995-12-05 Kubota Corp Suppressor for Membrane Surface Adhesion in Membrane Separator
JP3430183B2 (en) * 1994-06-06 2003-07-28 株式会社荏原総合研究所 Membrane separation biological treatment method
US5451317A (en) * 1994-09-08 1995-09-19 Kubota Corporation Solid-liquid separator
AUPM800694A0 (en) 1994-09-09 1994-10-06 Memtec Limited Cleaning of hollow fibre membranes
US5470469A (en) 1994-09-16 1995-11-28 E. I. Du Pont De Nemours And Company Hollow fiber cartridge
GB9511842D0 (en) 1995-06-10 1995-08-09 North West Water Group Plc Filter
US6685832B2 (en) 1995-08-11 2004-02-03 Zenon Environmental Inc. Method of potting hollow fiber membranes
JP3294979B2 (en) 1995-09-14 2002-06-24 株式会社精工技研 Optical fiber ferrule assembly with angle index indicating direction of polarization plane of optical fiber
JPH09141063A (en) 1995-11-21 1997-06-03 Mitsubishi Rayon Co Ltd Hollow fiber membrane module
JPH1024221A (en) * 1996-07-12 1998-01-27 Hitachi Plant Eng & Constr Co Ltd Solid-liquid separator
JPH1028845A (en) * 1996-07-17 1998-02-03 Kanegafuchi Chem Ind Co Ltd Hollow fiber membrane cartridge filter housing and backwashing method thereof
JP3436026B2 (en) 1996-12-02 2003-08-11 エヌオーケー株式会社 Hollow fiber membrane module
JPH10180053A (en) * 1996-12-24 1998-07-07 Nitto Denko Corp Spiral type membrane element
US6146747A (en) 1997-01-22 2000-11-14 Usf Filtration And Separations Group Inc. Highly porous polyvinylidene difluoride membranes
JPH10290984A (en) * 1997-04-21 1998-11-04 Daiki Kk Method and apparatus for suctioning treated water in wastewater treatment apparatus using hollow fiber membrane
USD400890S (en) 1997-12-03 1998-11-10 Gambardella C Bruce Automotive manifold
AU4227399A (en) * 1998-07-22 2000-02-14 Koch Membrane Systems, Inc. Multi-lumen porous membrane and method of construction
CA2290053C (en) * 1999-11-18 2009-10-20 Zenon Environmental Inc. Immersed membrane module and process
JP4107453B2 (en) 1998-11-26 2008-06-25 旭化成ケミカルズ株式会社 Hollow fiber membrane cartridge
US6156200A (en) 1998-12-08 2000-12-05 Usf Filtration & Separations Group, Inc. Gas-scrubbed hollow fiber membrane module
AUPP985099A0 (en) 1999-04-20 1999-05-13 Usf Filtration And Separations Group Inc. Membrane filtration manifold system
US6315895B1 (en) * 1999-12-30 2001-11-13 Nephros, Inc. Dual-stage hemodiafiltration cartridge
US6635179B1 (en) * 1999-12-30 2003-10-21 Nephros, Inc. Sterile fluid filtration cartridge and method for using same
AU142387S (en) 2000-05-31 2000-11-27 Evoqua Water Tech Llc Manifold header cap

Patent Citations (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228876A (en) * 1960-09-19 1966-01-11 Dow Chemical Co Permeability separatory apparatus, permeability separatory membrane element, method of making the same and process utilizing the same
US3693406A (en) * 1970-01-26 1972-09-26 Air Intake Renu Method for inspecting filters
US3968192A (en) * 1974-04-19 1976-07-06 The Dow Chemical Company Method of repairing leaky hollow fiber permeability separatory devices
US4192750A (en) * 1976-08-09 1980-03-11 Massey-Ferguson Inc. Stackable filter head unit
US4193780A (en) * 1978-03-20 1980-03-18 Industrial Air, Inc. Air filter construction
US4188817A (en) * 1978-10-04 1980-02-19 Standard Oil Company (Indiana) Method for detecting membrane leakage
US4218324A (en) * 1979-05-03 1980-08-19 Textron, Inc. Filter element having removable filter media member
US4248648A (en) * 1979-07-18 1981-02-03 Baxter Travenol Laboratories, Inc. Method of repairing leaks in a hollow capillary fiber diffusion device
US4385150A (en) * 1980-10-17 1983-05-24 Asahi Glass Company, Ltd. Organic solution of fluorinated copolymer having carboxylic acid groups
US4384474A (en) * 1980-10-30 1983-05-24 Amf Incorporated Method and apparatus for testing and using membrane filters in an on site of use housing
US4451369A (en) * 1980-12-18 1984-05-29 Toyo Boseki Kabushiki Kaisha Fluid separation apparatus
US4812235A (en) * 1982-03-29 1989-03-14 Hr Textron, Inc. Filter element assembly replaceable mesh pack
US4540490A (en) * 1982-04-23 1985-09-10 Jgc Corporation Apparatus for filtration of a suspension
US4687561A (en) * 1982-05-13 1987-08-18 Gerhard Kunz Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions
US4511471A (en) * 1982-06-03 1985-04-16 Drm, Dr. Muller Ag Filter apparatus for continuously thickening suspensions
US4614109A (en) * 1982-12-27 1986-09-30 Brunswick Corporation Method and device for testing the permeability of membrane filters
US4650596A (en) * 1983-05-13 1987-03-17 Henkel Kommanditgesellschaft Auf Aktien Pour point depressants for paraffin solutions
US4718270A (en) * 1983-05-17 1988-01-12 Coulter Electronics, Ltd. Porosimeter and methods of assessing porosity
US4636296A (en) * 1983-08-18 1987-01-13 Gerhard Kunz Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions
US4756875A (en) * 1983-09-29 1988-07-12 Kabushiki Kaisha Toshiba Apparatus for filtering water containing radioactive substances in nuclear power plants
US4767539A (en) * 1983-09-30 1988-08-30 Memtec Limited Cleaning of hollow fiber filters utilized in lumenal gas flow
US4609465A (en) * 1984-05-21 1986-09-02 Pall Corporation Filter cartridge with a connector seal
US4647377A (en) * 1984-07-24 1987-03-03 Kabushiki Kaisha Ito Tekkousho Filter apparatus
US4688511A (en) * 1984-08-01 1987-08-25 Filterwerk Mann & Hummel Gmbh Dirt accumulation indicator for air intake filters
US4931186A (en) * 1985-03-05 1990-06-05 Memtec Limited Concentration of solids in a suspension
US5024762A (en) * 1985-03-05 1991-06-18 Memtec Limited Concentration of solids in a suspension
US4642182A (en) * 1985-03-07 1987-02-10 Mordeki Drori Multiple-disc type filter with extensible support
US4816160A (en) * 1985-03-28 1989-03-28 Memtec Limited Cooling hollow fibre cross-flow separators
US4673507C1 (en) * 1985-05-06 2001-10-16 Eco Tec Fluid treatment process and apparatus
US4673507A (en) * 1985-05-06 1987-06-16 Eco-Tec Limited Fluid treatment process and apparatus
US4660411A (en) * 1985-05-31 1987-04-28 Reid Philip L Apparatus for measuring transmission of volatile substances through films
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
US4797211A (en) * 1985-12-24 1989-01-10 Kernforschungszentrum Karlsruhe Gmbh Cross flow microfilter
US4744240A (en) * 1986-05-27 1988-05-17 Akzo Nv Method for determining the bubble point or the largest pore of membranes or of filter materials
US4810384A (en) * 1986-06-20 1989-03-07 Rhone-Poulenc Recherches Hydrophilic PVDF semipermeable membrane
US4670145A (en) * 1986-07-08 1987-06-02 E. I. Du Pont De Nemours And Company Multiple bundle fluid separation apparatus
US4935143A (en) * 1986-07-11 1990-06-19 Memtec Limited Cleaning of filters
US4921610A (en) * 1986-09-04 1990-05-01 Memtec Limited Cleaning of hollow fibre filters
US5094750A (en) * 1986-09-12 1992-03-10 Memtec Limited Hollow fibre filter cartridge and header
US4840227A (en) * 1986-10-28 1989-06-20 Draegerwerk Ag Process for producing a hollow fiber mass transfer module and module produced by this process
US4846970A (en) * 1987-06-22 1989-07-11 Osmonics, Inc. Cross-flow filtration membrane test unit
US5221478A (en) * 1988-02-05 1993-06-22 The Dow Chemical Company Chromatographic separation using ion-exchange resins
US4999038A (en) * 1989-02-07 1991-03-12 Lundberg Bo E H Filter unit
US5151193A (en) * 1989-02-15 1992-09-29 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung Ev Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use
US4952317A (en) * 1989-03-10 1990-08-28 Bradley Culkin Device and method for filtering a colloidal suspension
US5006402A (en) * 1989-04-28 1991-04-09 The University Of Akron Wholly aromatic polyester fiber-reinforced high performance thermoplastic and process for preparing same
US5005430A (en) * 1989-05-16 1991-04-09 Electric Power Research Institute, Inc. Automated membrane filter sampler
US5138870A (en) * 1989-07-10 1992-08-18 Lyssy Georges H Apparatus for measuring water vapor permeability through sheet materials
US5194149A (en) * 1989-09-29 1993-03-16 Memtec Limited Filter cartridge manifold
US5227063A (en) * 1989-10-03 1993-07-13 Zenon Environmental Inc. Tubular membrane module
US5079272A (en) * 1989-11-30 1992-01-07 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
US5405528A (en) * 1990-04-20 1995-04-11 Memtec Limited Modular microporous filter assemblies
US5104546A (en) * 1990-07-03 1992-04-14 Aluminum Company Of America Pyrogens separations by ceramic ultrafiltration
US5209852A (en) * 1990-08-31 1993-05-11 Japan Organo Co. Ltd. Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module
US5151191A (en) * 1990-09-26 1992-09-29 Japan Organo Co., Ltd. Filtration process using hollow fiber membrane module
USH1045H (en) * 1990-11-19 1992-05-05 The United States Of America As Represented By The Secretary Of The Army Air bubble leak detection test device
US5192456A (en) * 1991-03-07 1993-03-09 Kubota Corporation Apparatus for treating activated sludge and method of cleaning it
US5417101A (en) * 1991-06-10 1995-05-23 Pall Corporation Method and apparatus for testing the integrity of filter elements
US5211823A (en) * 1991-06-19 1993-05-18 Millipore Corporation Process for purifying resins utilizing bipolar interface
US5643455A (en) * 1991-08-07 1997-07-01 Memtel Limited Concentration of solids in a suspension using hollow fibre membranes
US5137631A (en) * 1991-10-22 1992-08-11 E. I. Du Pont De Nemours And Company Multiple bundle permeator
US5198116A (en) * 1992-02-10 1993-03-30 D.W. Walker & Associates Method and apparatus for measuring the fouling potential of membrane system feeds
US5480553A (en) * 1992-02-12 1996-01-02 Mitsubishi Rayon Co., Ltd. Hollow fiber membrane module
US5543002A (en) * 1992-05-18 1996-08-06 Minntech Corporation Method of manufacture of hollow fiber filter cartridge with porous ring
US5531848A (en) * 1992-05-18 1996-07-02 Minntech Corporation Method of manufacturing of hollow fiber cartridge with porous ring
US5918264A (en) * 1992-11-02 1999-06-29 Usf Filtration And Separations Group Inc. Fiber monitoring system
US5320760A (en) * 1992-12-07 1994-06-14 E. I. Du Pont De Nemours And Company Method of determining filter pluggage by measuring pressures
US5401401A (en) * 1993-01-13 1995-03-28 Aquaria Inc. Hang on tank canister filter
US5389260A (en) * 1993-04-02 1995-02-14 Clack Corporation Brine seal for tubular filter
US5297420A (en) * 1993-05-19 1994-03-29 Mobil Oil Corporation Apparatus and method for measuring relative permeability and capillary pressure of porous rock
US5419816A (en) * 1993-10-27 1995-05-30 Halox Technologies Corporation Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions
US5607593A (en) * 1993-11-30 1997-03-04 Otv Omnium De Trajtements Et De Valorisation S.A. Installation for making water potable with submerged filtering membranes
US5403479A (en) * 1993-12-20 1995-04-04 Zenon Environmental Inc. In situ cleaning system for fouled membranes
US5531900A (en) * 1994-07-07 1996-07-02 University Of Arizona Modification of polyvinylidene fluoride membrane and method of filtering
US5639373A (en) * 1995-08-11 1997-06-17 Zenon Environmental Inc. Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
US5910250A (en) * 1995-08-11 1999-06-08 Zenon Environmental Inc. Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers
US20030136746A1 (en) * 1995-08-11 2003-07-24 Henry Behmann Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes
US5783083A (en) * 1995-08-11 1998-07-21 Zenon Environmental Inc. Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces
US5944997A (en) * 1995-08-11 1999-08-31 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
USRE37549E1 (en) * 1995-08-11 2002-02-19 Zenon Environmental Inc. Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
US6042677A (en) * 1995-08-11 2000-03-28 Zenon Environmental, Inc. Potted header for hollow fiber membranes and method for making it
US6193890B1 (en) * 1995-08-11 2001-02-27 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
US6077435A (en) * 1996-03-15 2000-06-20 Usf Filtration And Separations Group Inc. Filtration monitoring and control system
US5942113A (en) * 1996-10-16 1999-08-24 Morimura; Tadaki Solid-liquid separating filter medium for sewage, waste water, etc
USD396046S (en) * 1996-10-24 1998-07-14 Allen Scheel Steer device for an outboard motor
US6254773B1 (en) * 1996-12-10 2001-07-03 Usf Filtration And Separations Group, Inc. Microporous membrane filtration assembly
US6555005B1 (en) * 1996-12-20 2003-04-29 Usf Filtration & Separations Group Inc. Scouring method
USD396726S (en) * 1997-02-06 1998-08-04 Abc Group Combined air intake manifold and filter
US6048454A (en) * 1997-03-18 2000-04-11 Jenkins; Dan Oil filter pack and assembly
US6202475B1 (en) * 1997-05-30 2001-03-20 Usf Filtration And Separations Group, Inc. Predicting logarithmic reduction values
US6354444B1 (en) * 1997-07-01 2002-03-12 Zenon Environmental Inc. Hollow fiber membrane and braided tubular support therefor
US6024872A (en) * 1997-07-01 2000-02-15 Zenon Evironmental Inc. Method of making a dope comprising hydrophilized PVDF and α-alumina, and a membrane made therefrom
US5914039A (en) * 1997-07-01 1999-06-22 Zenon Environmental Inc. Filtration membrane with calcined α-alumina particles therein
US6083393A (en) * 1997-10-27 2000-07-04 Pall Corporation Hydrophilic membrane
US6039872A (en) * 1997-10-27 2000-03-21 Pall Corporation Hydrophilic membrane
US6280626B1 (en) * 1998-08-12 2001-08-28 Mitsubishi Rayon Co., Ltd. Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly
US6524481B2 (en) * 1998-09-25 2003-02-25 U.S. Filter Wastewater Group, Inc. Apparatus and method for cleaning membrane filtration modules
US20030075504A1 (en) * 1998-09-25 2003-04-24 Fufang Zha Apparatus and method for cleaning membrane filtration modules
US6440303B2 (en) * 2000-03-02 2002-08-27 Chapin Manufacturing, Inc. Fluid filter
US20030089659A1 (en) * 2000-04-10 2003-05-15 Fufang Zha Hollow fibre restraining system

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8048306B2 (en) 1996-12-20 2011-11-01 Siemens Industry, Inc. Scouring method
US7264716B2 (en) 1999-04-20 2007-09-04 Siemens Water Technologies Corp. Membrane filtration manifold system
US6962258B2 (en) 2000-04-10 2005-11-08 U.S. Filter Wastewater Group, Inc. Hollow fiber restraining system
US7300022B2 (en) 2000-11-13 2007-11-27 Siemens Water Technologies Corp. Modified membranes
US7404896B2 (en) 2000-11-13 2008-07-29 Siemens Water Technologies Corp. Modified membranes
US8518256B2 (en) 2001-04-04 2013-08-27 Siemens Industry, Inc. Membrane module
US7226541B2 (en) 2001-06-20 2007-06-05 Siemens Water Technology Corp. Membrane polymer compositions
US8512568B2 (en) 2001-08-09 2013-08-20 Siemens Industry, Inc. Method of cleaning membrane modules
US7018533B2 (en) 2001-09-18 2006-03-28 U.S. Filter Wastewater Group, Inc. High solids module
US6955762B2 (en) 2001-11-16 2005-10-18 U. S. Filter Wastewater Group, Inc. Method of cleaning membranes
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
US7632439B2 (en) 2002-02-12 2009-12-15 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
US8182687B2 (en) 2002-06-18 2012-05-22 Siemens Industry, Inc. Methods of minimising the effect of integrity loss in hollow fibre membrane modules
US8268176B2 (en) 2003-08-29 2012-09-18 Siemens Industry, Inc. Backwash
US8808540B2 (en) 2003-11-14 2014-08-19 Evoqua Water Technologies Llc Module cleaning method
US8758621B2 (en) 2004-03-26 2014-06-24 Evoqua Water Technologies Llc Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
US8790515B2 (en) * 2004-09-07 2014-07-29 Evoqua Water Technologies Llc Reduction of backwash liquid waste
US8506806B2 (en) 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
US8377305B2 (en) 2004-09-15 2013-02-19 Siemens Industry, Inc. Continuously variable aeration
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
US8496828B2 (en) 2004-12-24 2013-07-30 Siemens Industry, Inc. Cleaning in membrane filtration systems
US8758622B2 (en) 2004-12-24 2014-06-24 Evoqua Water Technologies Llc Simple gas scouring method and apparatus
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US8894858B1 (en) 2005-08-22 2014-11-25 Evoqua Water Technologies Llc Method and assembly for water filtration using a tube manifold to minimize backwash
US8293098B2 (en) 2006-10-24 2012-10-23 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US8623202B2 (en) 2007-04-02 2014-01-07 Siemens Water Technologies Llc Infiltration/inflow control for membrane bioreactor
US8318028B2 (en) 2007-04-02 2012-11-27 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US9206057B2 (en) 2007-05-29 2015-12-08 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US8372276B2 (en) 2007-05-29 2013-02-12 Siemens Industry, Inc. Membrane cleaning with pulsed airlift pump
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US10507431B2 (en) 2007-05-29 2019-12-17 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US8287743B2 (en) 2007-05-29 2012-10-16 Siemens Industry, Inc. Membrane cleaning with pulsed airlift pump
US8622222B2 (en) 2007-05-29 2014-01-07 Siemens Water Technologies Llc Membrane cleaning with pulsed airlift pump
US9573824B2 (en) 2007-05-29 2017-02-21 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US20110127209A1 (en) * 2008-07-24 2011-06-02 Siemens Water Technologies Corp. Frame System for Membrane Filtration Modules
US8382981B2 (en) * 2008-07-24 2013-02-26 Siemens Industry, Inc. Frame system for membrane filtration modules
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
US8652331B2 (en) 2008-08-20 2014-02-18 Siemens Water Technologies Llc Membrane system backwash energy efficiency
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US20130056404A1 (en) * 2010-04-14 2013-03-07 Degremont Water desalination plant, in particular seawater desalination plant, and connector for a tube of such a plant
US10441920B2 (en) 2010-04-30 2019-10-15 Evoqua Water Technologies Llc Fluid flow distribution device
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US10391432B2 (en) 2011-09-30 2019-08-27 Evoqua Water Technologies Llc Manifold arrangement
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9314561B2 (en) 2011-12-29 2016-04-19 Delcath Systems, Inc. Filter and frame apparatus and method of use
US10195334B2 (en) 2011-12-29 2019-02-05 Delcath Systems, Inc. Filter and frame apparatus and method of use
WO2013102167A1 (en) * 2011-12-29 2013-07-04 Delcath Systems, Inc. Filter and frame apparatus and method of use
US11083831B2 (en) 2011-12-29 2021-08-10 Delcath Systems, Inc. Filter and frame apparatus and method of use
US11833286B2 (en) 2011-12-29 2023-12-05 Delcath Systems, Inc. Filter and frame apparatus and method of use
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods

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